Permutation lock



(No Model.) 2 Sheets-Sheet 1`.

G. VO'GT. PBRMUTATION Loox.

No.509,006. Patented Nov. Z1, 1893.

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(No Model.) i 0 2 Sheets-Sheet 2.'

G. VOG-T. A

PERMUTATION 1.00K. Y l 0 No. 500,000. Patented Nov. 21, 180s.

, e e CL UNITED STATES PATENT OFFICE.

GEORG voGT, or LAHR, GERMANY.

SPECIFICATION forming' Part 0f Letters Patent No. 509,006, dated' November 21, 1893. l

Application tiled April 15, 1893. Serial No.4,70,437 (No model.)

To a/ZZ whom it may concern.-

manager, of Lahr Railway Station, Baden, in the Empire of Germany, have invented a new and useful-Permutation Lock, of' which the known as combination or letter-locks and which oi'ers still greater difficulties than heretofore to unauthorized persons in unlocking it, as not only the usual wordor number is` required to be known but also an extra Secre device has to be operated.

In the accompanying drawings the interior mechanism of the lock is clearly illustrated. Figure 1 is a vertical section through the center line of the lock. Fig. 2 is a similar section showing the parts in the position they would occupy when the lock is unlocked. Fig. 3, is a top view of the number disks. Fig. 4 is a top view of the coupling disks. Fig. 5 shows the middle plate. Fig. 6 shows the bed plate. Fig. 7 is a side view of the lower couplingpart. Fig. 8, shows in vertical section the mechanism for securing the lock in its open position and in a state of rest, and Fig. 9 is a vertical section of the same mechanism in action. f The essential features of the n ew safety lock for which the present application is made consist in three main parts, a bed-plate,` A, a middle plate B for setting the letter disks and a cover plate C for thev reception of the letter disks. The last named plate C carries, as shown in the drawings, four shanks c with button-heads b andthe letter or numbered disks c in suitable recesses. The plate itself is provided with marks d, Fig. 3, for setting the numbers or letters required for unlocking the lock. Each' shank a carries at its lower spondin g holes t' of the shanks a. These holes i also receivel the spiral springs lo which press against the ends of the Shanks h. Pins Z are inserted into the Shanks h, in a position therein v below the plate B, so as to keep the disks g in Be it known that I, GEORG VOGT, railway their proper place. The lower extremity of each shank h is provided with a bit or web m (see Fig. 7 which (its and passes through a corresponding opening fn. formed in the bed plate A, see Fig. 6. Eachv of the disks g has a pin o which is made to enter into the toothed disk e in order to couple the two Shanks a and h together. Y In addition to the recesses for the disks g, another recess and hole near oneend of the plate B are providedfor the reception of the locking spring catch p, which latter is retained in its position by a springjq. 4The spring catch p enters into a suitablenotcjh of the'locking bolt fr, which latter passes into the l interior of the lock through an vopening at the shooting bolt fr, the lock is unlocked. Screws e are passed through the plate Afor the purpose of regulating the lift of the plates B and C. The screw t serves also, after having lifted the plates B and C away from the plate A, to separate the plates B and C from each other vby giving it several turns, which is now possible,`as after having lifted the plates B and C up, the square part/w of the screwt is retired from the square opening o in the fixed plateA v and enters into the larger hole win the bed plate A. By separating the plates B and C from each other, the pins o of the disks g are brought out of contact with the toothed disks e, so as to allow of altering the numbered disks to another letter or number.A To prevent the plates B and C from approaching the plateAby accident during the operation, the upper plate C is provided on its inner side with a bell crank lever w which is lodged' in a recess in the plate B, Fig. 9,` and is kept in its normal position by a spring y, so that the free arm of it is made to enter the hole j in the plate A, but, by twisting the screw, will bear on the plate A. y y

The action of the mechanism for unlocking is as follows: After having turned the num# IOO bered disks by meansof the button heads b so as tof'place'the reqfuired Vnumbers-'opposite the marks d, the Shanks h are, through the medium of the coupling up of the toothed disks e with the disks g and their pins o, turned so that their bitsor. webs vmeoincide correctly with the slot n, Fig. 6. ing the `screw t, all the bits or webs m Will pass through the slots ln. and atv th'es'ameitime the catch p will be lifted out of the notch in the shooting bolt r, which latter can then be' retiredvand the lock be opened.

What I claim, and desire to secure by Let` ters Patent of the United-States, is

1. In a permutation lock a base plate having'an-'openliin'g'to receive aLnOtChed bolt, :an

seriesot" indicatin'g'l disks, Shanks! connected to said disks extending through the openings andxhaving projections adaptedA to register with the grooves, a notched bolt, a catch carried by the upper plate for engaging said bolt, and means for separating the plates when the ,projections are placed in alignment with the grooves, substantially as described.

3. In a permutation lock a base plate having arseriesk of grooved openings, a vertically movable middle plate having a series of recesses, disks seated in said recesses having Shanks-depending through'the openings in the base plate, projections carried by the Shanks adaptedtofalignv withnthe grooves, a vertically movable cap plate, a series of Shanks extending through openings therein, disksaon their lowerends'detachably'engagingthe disks of the'. middle plate, indicator =disks-mounted0n the shanksabovel the` :upperplate and means -Whereby'the middleand ca-pfpla-tes'rm-ay be ,elevated and also the'vcapand' middle plates separated, substantially asdese'ribedl In Wtnesswhereoft I hereunto set1my hand in: presence of two Witnesses. 

